/*
 * Copyright © 2018 Cask Data, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

import { Observable } from 'rxjs/Observable';
import MyCDAPVersionApi from 'api/version';
let versions = [];

const checkForSpark2 = (versions) => {
  let sparkcompat = versions.find((component) => component.name === 'sparkcompat');
  return !sparkcompat || (sparkcompat && sparkcompat.version.indexOf('spark2') !== -1);
};

export function isSpark2Available() {
  return Observable.create((observer) => {
    if (versions.length) {
      return observer.next(checkForSpark2(versions));
    }

    MyCDAPVersionApi.getCDAPComponentVersions().subscribe((v) => {
      versions = v;
      observer.next(checkForSpark2(v));
    });
  });
}
